On May 24, 2018, the American "Cygnus” (CRS OA-9E “S.S. J.R. Thompson”) private unmanned supply spacecraft was docked to the International Space Station (ISS). The Cygnus spacecraft was grappled by a robotic arm operated by astronauts inside the space station at 09:26 UTC. The cargo spacecraft was docked to the station’s "Unity” module at 12:13 UTC. The spacecraft delivered about 3300 kilograms of supplies to the Space Station. It was the 9th docking of a "Cygnus” spacecraft with the ISS.